此论文为收费论文服务。具体请咨询QQ:75931341,优惠提供毕业论文。
摘要：智能天线采用的空分多址SDMA（Space Division Multiple Access）技术充分利用了有限的信道资源，显著地扩大了系统的容量，并有效地提高了频谱的利用效率。因此，智能天线技术已经成为移动通信中最具有吸引力的技术之一。
本文首先简要介绍了智能天线原理在TD-SCDMA系统中的实现情况，并结合智能天线物理特性，TD-SCDMA智能天线相关仿真数据和典型现场测试实例，对TD-SCDMA 系统智能天线技术的原理、实现及功能验证进行了分析。从智能天线的功能和对网络的影响出发，阐述了在不同规划阶段，如何利用规划工具实现智能天线的功能模拟。
针对TD-SCDMA天馈系统的特殊性，研究了天馈系统及相关射频器件的性能指标，对整个天馈系统的工程设计及注意事项进行了探讨，对TD-SCDMA天馈系统存在的问题给出了一些改进建议。
关键词：智能天线；TD-SCDMA；仿真；工程设计
TD-SCDMA Smart Antenna System Principles and the implementation of the project
Abstract：Smart antenna, which uses the SDMA( Space Division Multiple Access) technology as its basic feature, use the limited channel resources thoroughly, and amplifies the system capacity obviously. Besides this, it also improves the efficiency of frequency usage. Therefore, smart antenna has become one of the most attractive technologies in the field of mobile communication.
In this paper, the realize situation of the smart antenna theory in TD-SCDMA(Time Division Synchronization Code Division Multiple Access) system is firstly introduced. Accompanied with the basic physical characteristics of smart antenna, relative simulation data and the field test example, an analysis about the theory, realization and function proof of the smart antenna in TD-SCDMA system has been made. Begin with this analysis; the thesis makes a discussion on how to realize the function simulation of smart antenna with the planning tools.
Secondly, according to the characteristics of TD-SCDMA antenna system, an introduction of the performance feature of the antenna system and relative radio equipment is made. Furthermore, the engineer design and the key issue of the antenna system are wholly discussed. In this discussion, the existing problems of the TD-SCDMA antenna system are listed in queue and some improvement advices are given accordingly.
Key words：Smart antenna, TD-SCDMA, Simulation, Engineer design
